func Create(ms Message, level *leveldb.DB) (int, string) { // input Message inputData := ms inputData.PostData = time.Now() if inputData.Name == "" || inputData.Message == "" { return 400, "error" } var readOpts db.ReadOptions // inputData toJson inputJsonData, err := json.Marshal(inputData) if err != nil { panic(err) } // inputData save var writeOpts db.WriteOptions err = level.Set([]byte(inputData.Name), inputJsonData, &writeOpts) if err != nil { panic(err) } // find keys var lastedKeys string keys, err := level.Get([]byte("keys"), &readOpts) if err == nil { lastedKeys = string(keys) lastedKeys += "," } else { lastedKeys = "" } // update keys lastedKeys += inputData.Name err = level.Set([]byte("keys"), []byte(lastedKeys), &writeOpts) if err != nil { panic(err) } return 200, "ok" }